tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef ASM_MSIDEF_H
2#define ASM_MSIDEF_H
3
4/*
5 * Constants for Intel APIC based MSI messages.
6 */
7
8/*
9 * Shifts for MSI data
10 */
11
12#define MSI_DATA_VECTOR_SHIFT 0
13#define MSI_DATA_VECTOR_MASK 0x000000ff
14#define MSI_DATA_VECTOR(v) (((v) << MSI_DATA_VECTOR_SHIFT) & \
15 MSI_DATA_VECTOR_MASK)
16
17#define MSI_DATA_DELIVERY_MODE_SHIFT 8
18#define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_MODE_SHIFT)
19#define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_MODE_SHIFT)
20
21#define MSI_DATA_LEVEL_SHIFT 14
22#define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT)
23#define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT)
24
25#define MSI_DATA_TRIGGER_SHIFT 15
26#define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT)
27#define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT)
28
29/*
30 * Shift/mask fields for msi address
31 */
32
33#define MSI_ADDR_BASE_HI 0
34#define MSI_ADDR_BASE_LO 0xfee00000
35
36#define MSI_ADDR_DEST_MODE_SHIFT 2
37#define MSI_ADDR_DEST_MODE_PHYSICAL (0 << MSI_ADDR_DEST_MODE_SHIFT)
38#define MSI_ADDR_DEST_MODE_LOGICAL (1 << MSI_ADDR_DEST_MODE_SHIFT)
39
40#define MSI_ADDR_REDIRECTION_SHIFT 3
41#define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT)
42 /* dedicated cpu */
43#define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT)
44 /* lowest priority */
45
46#define MSI_ADDR_DEST_ID_SHIFT 12
47#define MSI_ADDR_DEST_ID_MASK 0x00ffff0
48#define MSI_ADDR_DEST_ID(dest) (((dest) << MSI_ADDR_DEST_ID_SHIFT) & \
49 MSI_ADDR_DEST_ID_MASK)
50
51#endif /* ASM_MSIDEF_H */